There aren’t many 8K displays available yet, but by the time they become common (or at least more common), your laptop or even smartphone might be able to connect to your 8K TV and crank out super-high-resolution video.
The Video Electronics Standards Association has published the specifications for DisplayPort 1.4, which will support 8K displays.
DisplayPort 1.4 technology is compatible with USB Type-C, which means you may be able to connect your phone or other device into a display dock or adapter to send signals to a TV with resolutions as high as 7680 x 4320.
The new standard also supports High Dynamic Range (HDR) content, Display Stream Compression version 1.2 with a nearly lossless 3:1 compression ratio, forward error correction and support for up to 32 audio channels, 1536 kHz audio sample rates, and “inclusion of all known audio formats.”
via ComputerWorld